Puncture-closer for pneumatic tires.



D. APSTEIN.

PUNOTURE CLOSER FOR PNEUMATIC TIRES.

APPLICATION TILED JULY 23,1907.

Patented Dec. 15, 1908.

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DAVID APSTEIN, OF BRIDGEPORT, CONNECTICUT.

PUNCTUBE-CLOSER FOR PNEUMATIC TIRES.

Specification of Letters Patent.

Patented Dec. 15, 1908.

Application filed July 23, 1907. Serial No. 385,149.

To all whom it may concern:

Be it known that 1, DAVID Ars'rniN, a citizen of the United States,residing at Bridgeport, county of Fairfield, State of Connecticut, haveinvented a new and useful Puncture- Closer for Pneumatic Tires, of whichthe following is a specification.

This invention relates to puncture closers for pneumatic tires and hasfor its object to simplify and cheapen their construction and to greatlyimprove their operation in use.

\(Vith these ends in view I have devised the simple and novel puncturecloser of which the following descri tion in connection with theaccompanying c rawing is a specification, reference characters beingused to indicate the several parts.

Figure 1 is an elevation on an enlarged scale, of my novel puncturecloser, the inner and outer plates being in position as when grippingthe inner and outer sides of a tire; Fig. 2 a similar view, the outerplate being turned backward on the shank and the inner plate being inthe inserting position; Fig. 3 an inverted plan view corresponding withFig. 1; Fig. 4 an inverted plan view of the inner plate removed; andFig. 5 is a section on a still larger scale on the line 55 in Fig. 3.

My present invention comprises four essential elements, viz: a threadedshank, an elongated ca swiveled thereon, an inner plate adapter to bepassed throu h a puncture and to lie upon the inner sicle of a tire andan outer plate engaging the shank and adapted to be turned down closelyupon the outer side of the tire.

10 denotes the shank which is threaded and is provided with a head 11.

12 denotes an elongated cap which is swiveled on the head.

13 denotes the inner plate which is blanked out from sheet metal to therequired approximately oval configuration. At the center of the innerplate is a hole 14 through which the shank asses freely. The under sideof the inner p iate is provided upon one side of the hole with atransverse depression 15 forming a socket which partly receives theelongated cap, and in its u per side on the opposite side of the holewit a longitudinal groove 16 which receives the shank when the innerplate is turned to the inserting position, as in Fig. 2. The hole, thedepression and the groove may all beformed simultaneously with theblanking out of the inner plate.

17 denotes the outer plate which is also blanked out from sheet metaland is provided with a central hole threaded to engage the shank. Inpractice, the inner and outer plates are preferably corrcspondinglyshaped and are curved slightly to correspond respectively with thecurvature of the inner and outer sides of a tire.

In order to insure a perfectly tight connection with the tire, I coverboth the inner and outer plates with rubber, which is indicated by 18.This coating or covering of rubber may be applied in any suitable manneras by moldin the parts in rubber or dipping them in a sol ution ofrubber, the object being to pad or cushion the parts so as to cause themto make aclose andperfectly air-tight engagement with the inner andouter sides of a tire.

19 denotes a washer which I referably interpose between the head and thecap and-20 a piece of rubber tubing which 1 preferably place on theshank outside the cap and which is compressed against the under side ofthe inner plate when the latter is set to place as indicated by dottedlines in Fig. 5. The washer and piece of tubing are of course notessential but their cost is trifling and they assist in effecting aperfectly air-tight closure of a puncture, the piece of tubing beinforced into the inner end of the puncture ant compressed when the outerplate is tightened down u on the outer side of the tire.

The cevice is applied in the usual way. The puncture to be closed isenlarged, if necessary, sufficiently to permit the inner plate to beforced through when swung to the inserting position on the cap, as inFig. 2. Having inserted the inner plate, the shank is drawn outwardcausing the inner plate to assume the closing position, that is at rightangles to the shank as in Fig. 1. The outer plate is then turned down onthe shank until it engages the outer face of the tire, after which theouter plate is held and the shank is rotated, the head turning in thecap and the inner plate remaining stationary until the tire is tightlygripped between the inner and outer plates. The outer end of the shankmay be curved and recurved as shown in the drawing to form a hand piecefor convenience in manipulation. After the parts are set to place, theshank is broken or cut off flush with the outer surface of the outerplate.

Having thus described my invention I claim:

1. A. device of the character described, comprising a threaded shank, acap swiveled thereon, an inner plate loose on the shank and providedwith a depression in its under side to receive the cap and a groove inits up per side to receive the shank when in the inserting position andan outer plate engaging the shank.

2. A device of the character described, comprising a threaded shank, anelongated cap swiveled thereon, an inner plate loose on the shank andprovided in its under side with a transverse recess to receive the capand in its upper side with a longitudinal groove to receive the shankand means for retaining the device in place.

3. A device of the character described, comprising a threaded shankprovided with a head, a cap swiveled thereon, a washer between the headand the cap, an inner plate loose on the shank and retained by the cap,a piece of rubber tubing on the shank outside the cap and an outer plateengaging the shank.

4. A device of the character described,

- comprising a threaded shank having a head,

and an inner plate loose on the shank and retained by the head andadapted to be swung to the inserting position thereon and meansforretaining the device in place.

5. A device of the character described, comprising a threaded shankhaving a head, and an inner plate loose on the shank and retained by thehead and adapted to be swung to the inserting position thereon, saidplate being provided with a depression in its under side and a groove inits upper side, substantially as described, for the purpose specified.

6. A device of the character described,

comprising a shank, a cap swiveled thereon,

an inner plate through which the shank passes loosely and which isadapted to be swung to the inserting position on the cap and means forsecuring the device in place.

7. A device of the character described, comprising a threaded shank, acap swiveled thereon, a rubber-coated inner plate through which theshank passes freely and which is adapted to be swung to the insertingposition on the cap and a rubber-coated outer plate threaded to engagethe shank.

In testimony whereof I afliX my signature,

in presence of two witnesses.

DAVID APSTEIN.

WVitnesses A. M. Woosrnn, S. W. 'ATHERTON.

